Electrical Systems Safety - Capstone Assessment

Vocabulary flashcards for review.

AS/NZS 3000:2007

Wiring rules and standards used in Australia and New Zealand for electrical installations.

AS/NZS 3008:1:1998

Australian/New Zealand Standard for Electrical Installations - Selection of Cables.

NSW Service and Installation Rules

Rules and regulations specific to New South Wales for electrical service and installations.

Restriction Sign

A sign indicating an area where entry is restricted to authorized personnel only.

Polarity Testing

To ensure conductors are not transposed.

Function of the MEN link

To connect the earthing system within the electrical installation to the supply neutral conductor.

Three major risks identified in AS/NZS 3000:2007

Shock current, Excessive temperatures, and Explosive atmospheres

Three considerations when determining the maximum demand of an electrical installation

Capacity, physical distribution and intended use of electrical equipment in the installation

Equipment used in an electrical installation

Equipment must be safe to use and not cause danger.

Major hazard with confined spaces

Flammable contaminants and oxygen depletion

Period for which the 'Contractors Copy' of the Certificate of Compliance - Electrical Work should be retained

5 years

MEN system of earthing

All parts of an installation required to be earthed are connected to the general mass of earth and in addition are connected to the main neutral link

Final sub-circuits for which it is necessary to verify earth fault-loop impedance

Socket outlets not protected by RCDs

Selecting a cable for a final sub-circuit

The continuous current carrying capacity should be at least equal to demand of final sub-circuit and at least equal to circuit breaker rating

Socket outlet installed for the supply of pool equipment and located a distance of 1.5 metres from the pool rim

Have an IP rating of at least IPX4